assuming no bundling takes place

~4Million

~4.5Million with downloads.

The game will also be releasing on UMD and PD shows shipment sales on their official website so we will know.

Does PD also give out info for DLed GT5:Prologue downloads?
I can't see the info on their site...

scratch that - 3.67 million

doesn't break down to download numbers though

http://www.polyphony.co.jp/english/list.html

VGChartz has total (sold to retail?) at 3.05mil so downloads are probably about 600k-700k, if not slightly higher

so I'll say about 4 mill total for GT5:PSP

Motorstorm is nothing like GT besides driving cars. In any case GT Mobile will tear apart Motorstorm PSP sales with ease.

wow if thats the case, then there's about 600k copies floating around stores & bundles. seems a bit high, but I suppose it's possible.

That could also make the number of units shipped + downloaded ~4 million, pretty impressive.